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New Na-Ion Solid Electrolytes Na4-xSn1-xSbxS4 (0.02 x 0.33) for All-Solid-State Na-Ion Batteries

Title
New Na-Ion Solid Electrolytes Na4-xSn1-xSbxS4 (0.02 x 0.33) for All-Solid-State Na-Ion Batteries
Authors
Heo, Jong WookBanerjee, AbhikPark, Kern HoJung, Yoon SeokHong, Seung Tae
DGIST Authors
Hong, Seung Tae
Issue Date
2018-04
Citation
Advanced Energy Materials, 8(11)
Type
Article
Article Type
Article
Keywords
Antimony compoundsChemical stabilityCrystal structureElectric batteriesElectrolytesIonic conduction in solidsIonic conductivityIonsSodium compoundsSolid state devicesSulfur compoundsTin compoundsTitanium compoundsAir stabilityAll-solid stateEnergy storage applicationsHigh capacityNa-ion batteriesSolid state batteriesStructural classSulfidesSolid electrolytes
ISSN
1614-6832
Abstract
Sulfide Na-ion solid electrolytes (SEs) are key to enable room-temperature operable all-solid-state Na-ion batteries that are attractive for large-scale energy storage applications. To date, few sulfide Na-ion SEs have been developed and most of the SEs developed contain P and suffer from poor chemical stability. Herein, discovery of a new structural class of tetragonal Na4- xSn1- xSbxS4 (0.02 ≤ x ≤ 0.33) with space group I41/acd is described. The evolution of a new phase, distinctly different from Na4SnS4 or Na3SbS4, allows fast ionic conduction in 3D pathways (0.2-0.5 mS cm-1 at 30 °C). Moreover, their excellent air stability and reversible dissolution in water and precipitation are highlighted. Specifically, TiS2/Na-Sn all-solid-state Na-ion batteries using Na3.75Sn0.75Sb0.25S4 demonstrates high capacity (201 mA h (g of TiS2)-1) with excellent reversibility. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URI
http://hdl.handle.net/20.500.11750/5771
DOI
10.1002/aenm.201702716
Publisher
Wiley-VCH Verlag
Related Researcher
  • Author Hong, Seung Tae Discovery Lab(Batteries & Materials Discovery Laboratory)
  • Research Interests Magnesium, sodium and lithium ion rechargeable batteries; New inorganic materials discovery; Solid state chemistry; Crystallography; Mg, Na, Li 이온 이차전지; 신 무기재료 합성; 고체화학; 결정화학
Files:
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Collection:
Department of Energy Science and EngineeringDiscovery Lab(Batteries & Materials Discovery Laboratory)1. Journal Articles


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